A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ

23 rd
4 DISCUSSION
The results of measurements and comparison
with the air quality limit values for average
annual value, but also for the high value
notes that all of the measured values of
emissions of harmful pollutants are below
the prescribed limits. The reason for this is
the dynamic of removing overburden from
the mine waste and tailings from mining. The
frequency of vehicles on the roads is at a
frequency of 1 dig vehicle is moving toward
the landfill every 13 minutes, until it returns
with another vehicle disposal on land.
Crossing takes place in the middle the route,
or the part of the route that passes through
the village . Such traffic frequency is
not characterized by driving transport
vehicles in the row, and the emissions of
exhaust gases, regardless of the amount and
concentration, are not high enough to
significantly influence the general change in
the air quality in the investigated area.
However, no matter the measured values of
gaseous pollutants are below the limit, it is
indicative that the laboratory analysis
showed the appearance of harmful pollutants
that are not found in the natural setting of the
village, but that they are the result of the
effects of mining operations located in the
village environment . Traces of
extremely harmful pollutants, formaldehyde
and acrolein in the atmosphere of the village,
which is emitted from the exhaust gases of
diesel pick-up trucks, warn that some
measures to reduce emissions of these
pollutants have to be made.
Measurements of emissions and dust settling
airborne dust is determined as follows:
- From these measurement points at the
measuring point 7, which is located at 20 m
from the route of transport, maximum
concentrations were determined for the
average monthly value of precipitated
powder (4610.83 mg/m 2 day). Concentration
of precipitated powder-dust sediment, the
other measuring points are also above the
normative value of 200 mg/m 2 day, ie from
350 mg/m 2 day.
- Imission deposited dust decreased
significantly with increasing distance from
the pathway. For the measurement of 100 m
away from the route of transport emissions
of dust deposited in the winter go below
normative values. These results indicate that
the effect of truck transport decreases with
distance from the pathway.
- At tests were being conducted during
two periods, winter and spring, it can be seen
that the spring feature has higher emissions,
dust settling on the measuring cells
immediately around the route, which is
logical, because the emitted dust is mostly
deposited directly at the source of dust. The
winter has generally lower concentrations of
dust settling on the section of the route
compared to the spring, although the values
are still above the concentration limits.
- The maximum value of particulate
matter less than 10 micrometers (LC-10) was
measured in terms of: Dry, truck freight
works at the measuring point 7, and 20 m
from the transport route.
- The exceeding of the airborne dust
concentration was measured in all cases
except when it's wet, then transport does not
work.
- Total suspended particles present
floating dust sizes up to 40 micrometers.
According to the measurements of the largest
ULC dust emissions were measured in the
dry period when there is truck transport.
- Decline the airborne dust with
increasing distance of transport routes is not
as enhanced as in the sedymentary dust.
Emissions, dust suspended above the
allowable values for measurement points that
are further away from transport routes.
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